Kernel Vulnerability in Linux Package: Potential Access to Freed kirqfd Instance
Summary
DEBIAN-CVE-2024-46762: In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmd_irqfd_assign() and privcmd_irqfd_deass... Affects linux versions < 6.10.11-1. Fixed in 6.10.11-1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Linux kernel is a core component of the Debian operating system, responsible for managing hardware and system resources. It provides essential services for all other software running on the system. The kernel is known for its stability and performance, but like any complex software, it can have vulnerabilities. This specific vulnerability affects the Linux kernel versions in Debian 13 and 14, highlighting a concurrency issue that can lead to system instability.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the handling of ioctl calls to privcmd_irqfd_assign() and privcmd_irqfd_deassign(). The issue arises when simultaneous calls to these functions occur, potentially allowing a freed kirqfd instance to be accessed after it has been deallocated. This can result in a kernel oops, leading to system crashes or unpredictable behavior. The vulnerability is rooted in the lack of proper locking mechanisms, which can be exploited by multi-threaded operations.
How To Fix
Minimum fixed version
6.10.11-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is advisable to apply the patch as soon as it is available to mitigate the risk.
Conclusion
The identified vulnerability in the Linux kernel poses a significant risk due to its potential to cause system instability. It is crucial for users of Debian 13 and 14 to update their Linux packages to the patched version 6.10.11-1 to mitigate this risk. Regular monitoring and timely updates are essential for maintaining system security.
See every vulnerability recorded for linux →
FAQ
The vulnerability allows for potential access to a freed kirqfd instance in the Linux kernel, which can lead to system crashes.
The vulnerability affects the Linux kernel versions in Debian 13 and 14 prior to the fixed version 6.10.11-1.
You can check your system's Linux kernel version using the command 'uname -r' in the terminal.
Yes, Vulert can monitor and alert for open-source vulnerabilities in your software using a manifest file like package-lock.json.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
